Have you ever made a Never Ending Card? It's really not as hard as it looks and is a great WOW! You can get the instructions/tutorial from Splitcoast Stampers.
It really looks complicated. The mechanism is just 4 pieces of cardstock (Balmy Blue for my card) that are 3" x 6".
I used the DSP from Pleased As Punch which is not available now.
I enjoyed decorating all the different panels with things from the Paper Pumpkin kit and the Pleased as Punch paper.
So .... check out the TUTORIAL at Splitcoast. Splitcoast Stampers is always a great resource for tutorials. Plus they have Weekly Challenges that are a lot of fun - especially, when you are stuck at home!!